Improved spring bed-bottom



UNITED STATES PAEN imion,

HENRY LATHROP, OF UTICA, NEV YORK.

IMPROVED SPRING B'ED-BOTTOM.

Speci ation forming part of Letters Patent No. 44,962, (latcd November S, 1864.

To all whom it may cmzccrn Be it known that I, HENRY LATHRoP, of the city of Utica, in the county of Oneida, in the State of New York, have inVente-d a new and improved mode of constructing spiralf springbed-bottoms, which improvementis a-lso applicable to seats and other articles in which spiral springs are used; and I do hereby declare that the following is a full and exact descriptiou thereof, reference being had to the annexed drawings, and to the letters of reference rnarked thereon, .making a part of this specifcation.

Figure 1 is a Vertical section of a bed-bottam constructed according to my invention. Fig. 2 is a perspective view of the same.

The nature of my improvement consists in providing tracls or ways opposite the springs in a bed-bottom, seat, or other article, and connecting the springs thereto, as hereinafter described, so as to allow them to act indei pendently to the extent of their capacity when acted upon, so as to prevent any lateral movement of the springs or tipping toward the center and the con sequent destruction of the center springs and wearing through of the coverin g or mattress, thus proriding for the full and perfect operation of the springs, and the elasticity, comfort, and durability of the article in which they are placed.

To enable those skilled in the art to fully understand and construc't my invention, I will proceed to dcscribe it.

A represcnts a skeleton box or frame with a series of slats, B, secnred across the bottom of the same, to which springs O the same or similar to those used for upholstering` purposes-are secnred at their lower end in a perpendicular position, and which are connected with each other at their upper end with twine, wehbing, or canvas in the usual way, as clearly shownin Fig. 1.

D represents tracks or ways opposite each outermost spring, O, in line with its perpendicular center, iu the form of staples or pins of metal, wood, or other material answering the purpose, secured to the frame or inner surface of the box A, or narrow slots or openings through the sides of the same. To these ways or tracls D the springs G are connected at their upper end, as shown in Fig. 1, by means of loops, rings, hooks, or slides E, or in any other way substantially the same, which will freely move along the tracks or ways D, as the full action of the springs G may require, at 'the same time confining the Springs O to their proper working Vertical position.

It will be readily seen that my invention differs materially and substantially from any and all hitherto constructed with rigid permanent fastenings in either'single or double frames.

The common mode of constrncting bedbottoms, seats, &c., in boX-frames securing` the outer spiral springs to the upper edge of the box is and ever has been objectionable, as the action of the outer springs is thereby circumscribed, and they incline from their top toward the centenethrowing the weight and service upon the center springs, and, not to speak of the discomfort, the article is soon destroyed.

VV here two frames are used and the fastenings made to the upper frame the same as to the box in the common mode just mentioned, the action of the outer springs cannot be said to be independent, as no spring can act to its full capacity, depending, as it does, upon the yieldlng of the upper frame, which is supported by all the springs, which resistance mustfirst be overcome by weight or pressure before the Springs can act beyond a certain limit, whereas the outermost springs in a bedbottom constructed according to my invention act independently in their proper working Vertical position only to the full extent of their capacity, thus torming a bed-bottom or seat more perfect in its operation, and consequently more comfort-able and durable than any hitherto constructed which have passed under my observation.

Having described my invention, what I claim as new, and dcsire to secure byLcttcrs Patent, is-

The trachs or ways made in or through or secured to the frame or box, and the mode of connecting the outermost springs, in a bedbottom, seat, or other article, to the ways or i tracks so provided by means of slides, loops,

or rings, or in any other way substantially the same, which will freely pass or move along the tracks as the action of the springs may require, the whole being arranged as and for the purpose set forth.

HENRY LATHROP.

Attest:

DnX'rnR GILLMORE, BENJAMIN Almor'rn 

